# HG changeset patch
# User Mike Becker <universe@uap-core.de>
# Date 1471957649 -7200
# Node ID 2b4ac35d061dbd1a3b8475acf801acec934b7008
# Parent  a8cee98c8832c6dedcf8d7ec0aeca71860342422
cleans up formatfile function up to the parser call

diff -r a8cee98c8832 -r 2b4ac35d061d src/c2html.c
--- a/src/c2html.c	Tue Aug 23 14:31:02 2016 +0200
+++ b/src/c2html.c	Tue Aug 23 15:07:29 2016 +0200
@@ -47,67 +47,70 @@
         "\n");
 }
 
-#define WRITECONST(stream, out, cstr) out(cstr, 1, sizeof(cstr)-1, stream)
 int formatfile(
         highlighter_t *highlighter,
         UcxList *in,
-        write_func out,
-        void *stream,
+        write_func out, void *stream,
         int showlineno) {
-    size_t lines = ucx_list_size(in);
     
+    /* compute width of line numbering */
+    int lnw;
+    if (showlineno) {
+        size_t lines = ucx_list_size(in);
+        lnw = 1;
+        int p = 1;
+        while ((p*=10) < lines) lnw++;
+    }
+    
+    /* allocate line buffer */
     UcxBuffer *line = ucx_buffer_new(NULL, 1024, UCX_BUFFER_AUTOEXTEND);
     if(!line) {
         return 1;
     }
-    WRITECONST(stream, out, "<pre>\n");
     
-    int lnw;
-    {
-        lnw = 1;
-        int p = 1;
-        while ((p*=10) < lines) lnw++;
-    }
+    /* start monospace formatting */
+    out("<pre>\n", 1, 6, stream);
 
+    /* process lines */
     size_t lineno = 0;
     UCX_FOREACH(sourceline, in) {
+        /* increase line number and clean line buffer */
         lineno++;
+        ucx_buffer_clear(line);
+        
+        /* write line number */
+        if (showlineno) {
+            ucx_bprintf(line, "<span class=\"c2html-lineno\">"
+                    "<a name=\"l%d\" href=\"#l%d\">%*d </a></span> ",
+                    lineno, lineno, lnw, lineno);
+        }
+        
         /* TODO: backwards compatibility: replace line->space in all occasions
          * and use UcxBuffer functions
          */
+        char *buf = line->space + line->pos;
         if (highlighter) {
-            highlighter->parser(sourceline->data, line->space, highlighter);
+            highlighter->parser(sourceline->data, buf, highlighter);
         } else {
             char *c = sourceline->data;
             size_t dp = 0;
             while (*c && *c != '\n') {
-                dp = writeescapedchar(line->space, dp, *c);
+                dp = writeescapedchar(buf, dp, *c);
                 c++;
             }
-            line->space[dp++] = '\n';
-            line->space[dp] = '\0';
+            buf[dp++] = '\n';
+            buf[dp] = '\0';
         }
-
-        // write line number
-        if (showlineno) {
-            WRITECONST(stream, out, "<span class=\"c2html-lineno\">");
-            char lnbuf[128];
-            int len;
-            // line number link
-            len = snprintf(lnbuf, 128, "<a name=\"l%d\" href=\"#l%d\">",
-                lineno, lineno);
-            out(lnbuf, 1, len, stream);
-            // justified line number
-            len = snprintf(lnbuf, 128, "%*d ", lnw, lineno);
-            out(lnbuf, 1, len, stream);
-            WRITECONST(stream, out, "</a></span> ");
-        }
+        line->size = strlen(line->space);
         
-        // write formated (or plain) code line
-        out(line->space, 1, strlen(line->space), stream);
+        /* write code line */
+        out(line->space, 1, line->size, stream);
     }
     
-    WRITECONST(stream, out, "</pre>\n");
+    /* end monospace formatting */
+    out("</pre>\n", 1, 7, stream);
+    
+    /* cleanup and return */
     ucx_buffer_free(line);
     return 0;
 }